In our lab‚ we were given the task of burning seven different salts and taking notes of what we observed. The different salts included Potassium chloride‚ Calcium chloride‚ Strontium chloride‚ Lithium chloride‚ Copper II chloride‚ Sodium Chloride‚ and Barium Chloride. Burning a pinch of each salt separately by holding a nichrome wire over a Bunsen burner‚ we found that each salt emitted a different color of light. For example‚ Potassium Chloride burnt a bright pink flame when burned‚ while Calcium
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FIBER-OPTIC COMMUNICATION Introduction Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. The light forms an electromagnetic waves that is modulated to carry information. First developed in the 1970s‚ fiber-optic communication system have revolutionized the telecommunication industry and have played a major role in the advent of the information over age. Because of its advantages over electrical
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In virtually any art form‚ color temperature can be manipulated in a way that evokes certain moods and feelings to the viewer. These two paintings are a perfect example of how color temperature can interpret the same subject in several ways. André Derain’s The Houses of Parliament from Westminster Bridge‚ 1906 displays a distinct warm temperature that is interwoven with cooler tones. At a first glance‚ the red‚ yellow‚ and green that dominates the painting tells us that it is indeed on the warm end
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dye was obtained through spectrophotometry.1 Through this method‚ we determined that the wavelength of maximum absorbance of a given food dye was directly correlated to the color of that food dye. Further‚ darker food dyes absorbed more light than lighter food dyes (Table 1). The relationship between the color of light absorbed and the color of light transmitted is demonstrated in Figure 1.2 When the wavelengths of a color on the color wheel is absorbed‚ the color directly across
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Theo Victor Cavite Chem 28.1 Melanie Bucsit-Carpio September 14‚ 2012 Spectrophotometric Determination of Iron in Aqueous Solutions as a Complex of 1‚10-Phenanthroline Introduction From the previous classical method of concentration determination of an unknown sample‚ this experiment now deals with the instrumental one. Unknown concentrations of iron in solutions were determined by measuring their corresponding absorbances through spectrophotometry. A spectrophotometer measures the amount
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chloroplast organelle produces “chlorophyll molecules forming a light harvesting complex absorbing that energy‚ exciting electrons” ((n.d.). Retrieved March 22‚ 2018‚ from https://msu.edu/user/morleyti/sun/Biology/lightreactions.html)‚ absorbing specific wavelengths for why we can see such a colorful environment. And sugar molecules are produced. In this experiment‚ trials were conducted to test hypothesis of whether all 40 circular spinach leaves would arise or stay at ground level in differential water temperature’s
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of refraction 2. Light must bend away 3. Light must be greater than the critical angle C. Dispersion of Light 1. Light travels at 3.00 x 108 m/s only through a vacuum of space but in other media‚ light moves slower D. Waves of different wavelengths travel at different
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Equilibrium In your text (Chang‚ 6th Ed) : Ch. 15 Chemical Equilibrium‚ esp. Section 15.3 Purpose: The Law of Mass Action will be examined via a series of samples using the same reaction‚ but different stating concentrations. The equilibrium constant‚ K‚ for each reaction will be calculated‚ demonstrating that K for a given reaction at a fixed temperature is a constant‚ independent of starting concentrations. Background: For a general reaction aA + bB ↔ cC + dD‚ the Law of Mass Action
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113‚ we discussed the relationships between energy‚ wavelength‚ frequency‚ and speed of light waves. The wavelength‚ λ‚ (lambda) of any wave is the crest-to-crest distance between waves. The frequency‚ ν‚ (nu) is the number of complete oscillations that a wave makes each second. The speed of a wave is the distance one wave travels in a given time period. The relation between wavelength‚ frequency‚ and speed is Speed = frequency * wavelength (1) The speed of light is constant in a given medium
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is a method to measure how much a chemical substance absorbs light by measuring the intensity of light as a beam of light passes through sample solution. The basic principle is that each compound absorbs or transmits light over a certain range of wavelength. This measurement can also be used to measure the amount of a known chemical substance. Spectrophotometry is one of the most useful methods of quantitative analysis in various fields such as chemistry‚ physics‚ biochemistry‚ material and chemical
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